This is a replacement fitting (1 piece) that can be used on any of MistKing's pumps. The starter and ultimate system use this fitting on the pumps.

3/8" NPT male on one threaded end and 1/4" push-to-connect fitting on the other end. Made of nickel plated brass, this fittings is very durable. Push-to-connect for easy tube removal. Do not purchase this fitting for advanced pumps.